Stacking mechanism for paper-box machines



May 29, 1928.

E. GLSTAUDE STACKING MECHANISM FOR PAPER BOX MACHINES Filed July 15,1926 8 Sheets-Sheet l EE-E- L as? E;

Wye/woe I EDW/NG STAUDE B M 53 W May 29, 1928.

1,671,790 E. G. STAUDE s'mcxme MECHANISM FOR PAPER BOX MACHINES I FiledJuly 15, 1926 8 -s e 2 INVENTOQ WIN STAUDE *4 MM AT/OENEYS May 29, 1928;

E. G.'STAUDE STACKING MECHANISM FOR PAPER Box MACHINES Filed July l5,1926 r 8 Sheets-Sheet 3 E. G. STAUDE v 1 STACKING MECHANISM FOR PAPERBOX MACHINES Filed July 15, 1926 a spe twsheet 4 w i I ga n i W I h w If I Q jjillti Q \\v 'lliiiilllllillifll i Q I l I May 29, 1928.

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Filed Ju1y15, 1926 a Sheets- Sheet e Q 46 mm lllllll 8 36 f 3 z3INVENTOB DW/N e smuoz 76 BY w iemw I Afroelvsvs May' 29, 1928.

I 1,671,790 E. G. STAUDE STACKING MECHANISM FOR PAPER BOX MACHINES 8Sheets-Sheet ,23

' Filed July 15, 1926 INVENTOB EDWIN s smuo: BY? 2 rroewzvs May 29,1928. M 1,671,790

E. G. STAUDE STACKING MECHANISM FOR PAPER BOX MACHINES Filed July 15,1926 8 Sheets-Sheet 8 MAII n it 247 37 1 3a. QJ a? 42 Z8-\ V I I K139F/G. /6 l INVENTOB ENE Y8 Patented May 29, 1928.

UNITED STATES PATENT- o ncE.

Erwin e. STAUDE, or 'nmnnroms, MINNESOTA.

STACKIN'G MECHANISM FOR PAPER-BOX MACHINES.

Application filed $111915,

This invention is .an improvement upon my application Serial #698,098,filed March 10, 1924, and also on Patent #961,263, dated June 14, 1910,and Patent #1,018,087, dated February 20, 1912. I

The object of my'invention is to provide an improved delivery for paperbox machines which will require a' minimum adjustas it passes into thedelivery section at the.

rate of 100 per minute or 2000 per minute, if

desired, without readjusting the speed of the stacking mechanism.

A further object-is to provide a construction which will be strong andrigid and still j be light and simple in construction.

Other objects of the invention will appear from the following detaileddescription.

The invention consists generally in various constructions andcombinations, all as hereinafter described and particularly pointed outin the claims.

. ln the accompanying drawings, forming a part of this specification,

Figure 1 is a plan view of a machine embodying my invention; I

- Figure 2 is a side elevation thereof;

Figure 3 is a. transverse section on the line 33' of Figure 1; 1

Figure 4 is a sectional View of the carton receptacle showing the meansfor feeding the cartons into the receptacle, the inclined-belt forconveying the carton to the rear of the receptacle the back-stoparrangement, and the relative position of the lifters with respect tothe rear of the cartons, also showing the manner in which the lifterskeep the cartonsin the receptacle clear of the path of the followingincoming carton;

. Figure 5 is a side View of one of the lifter cases, looking from theinside of the stacker receptacle;

Figure 6 is an end view of the same;

Figure 7 is a similar view to Figure 6 1926. Serial no. 122,603.

withthe cover plate removed showing the driving connection;

Figure 8 is a section through the liftercases, showing the position ofthe various lifter fingers as they function in the stacker receptacle;also showing, a section of the stacker beltand incoming cartons;

Figure 9 is a section on the line 99 of Fi ure 6;

igure 10 is a section on the line 10-10 9 of Figure 6; I

Figure 11 isadetail of the-driving connection of the lifter;

Figure 12 is a detail of the manner of shifting one ofthe gears out ofmesh with the tram of gears that drive the lifters for the purpose oftiming one set of lifters with the co-acting lifters on the'oppositeside of the stacker receptacle;

Figure 13 is a detail sectlon of the friction members which clamp theforward lower end of the individual lifters to give- I the in and outmovement-- Figures 14, 15, 16 and 171 are sections through the liftercase and show the consecutive position of the lifting finger, the actionof. the actuating member, and the elampin g mechanism.

In the drawing, 2 represents a folding paper box machine to which myinvenion is attached, having the usual feed table 3, the glue pot 4:,the folding mechanism 5, and the usual feedrolls 6 and 7 at the deliveryend of the machine for delivering the cartons into a collectingreceptacle. (See Figure 4.)

The collecting receptacle is also provided with the usual stacker beltpulley or drum 8 (see Figure 4) which drives the adjustable inclinedbelt 9, the position of said belt 9 being determined for the particularcarton by an adjustable roller 10, the belt passing over the pulley 11and around the idler 12 to suitable tightening mechanism for taking upthe slack of the belt when adjustment is made for small cartons.

The-back-stop 13 is adjustable vertically and horizontally bythe slide14 which functions in a suitable clamp, not shown.

Forming a continuation of the folder frame structure on the right handsideisa bracket 15 and a similar bracket 16 forms a continuation of theleft hand folder frame 1 mechanism.' '(See Figure 3.) l

Each side of the machine has the usua drive shaft 17 and 18 adapted tobe adjusted simultaneously with the folder frame for guiding blanks ofdifferent widths. The shafts 17 and 18 are driven in the conventionalmanner. v

Mounted on the bracket 15 is a lifter case 19. The bracket 15 has a slot20 for the adjustment of the lifter case 19 in dilferent positions fromthe front to the rear of the stacking receptacle, and is secured by acap screw 21, having a nut 22.

On the bracket 16 is a similar lifter case 23, having a similaradjusting slot 24, and

also a cross adjustment slot 25, said case being clamped by a cap screw26 and a nut 27, after the correct position has been ascertained withrespect to the line-up of the folder frames, so that the incoming cartonwill have a free travel along a straight line as it passes from themachine into the carton collecting receptacle.

The lifter cases are provided wlth guide plates 28 which cover the facesof the lifter which the lifters project into the path of the cartonsbetween the plates in the receptacles for the purpose to be laterdescribed.-

Referring to Figure 4, I have. indicated a carton 30 passing between thefeed rolls 6 and 7 and between the belt 9 and the tension pressure roll31, which roll revolves by frictional contact with the surface of thecarton 30, that is moved by the belt 9 up the incline 32 of the beltover the high point 33 and against the back-stop 13, which arrests thehorizontal movement of the carton at the forward end, but because of theposition of the roller 10 which forms-an elevated point near the centerof the stack of cartons,

.it follows that when the carton has passed 'out from under the tensionroller 31, the

rear of it will fly up into a position in alinement withthe center ofthe carton at the point 33 and the point where the'carton rests againstthe back-stop 13. I

This snapping up of the rear of the carton, for the reasons abovestated, is sufiicient to cause a space for the succeeding carton to passunder' the preceding one.

I find, however, that as the load increases,

the pressure of the cartons at the point 33 will be so great that theincoming carton 30 cannot pass beyond this point, with the rethe casewhere a revolving spiral is used for I performing this operation.

These lifters will permit a stack of cartons to be guided on a-radius ofsufiicient size so that the delivery can be made in a horizontaldirection before theeyesof the operator, who can inspect the cartons andreadily remove them from the delivery table 35. (See Figures 1, 2 and3).

The lifter lingers 34 are pivoted at the point 36 and have a stop 37adapted to bear against a surface 38 of the actuating member 39.

The extensions 40 limit the upward movement of the lifter lingers 34.

The purpose of this flexible mounting of the fingers is to permit thewithdrawal of a finger 34 without tearing or mutilating the carton whenthe succeeding linger carries the load which may be one, two or morecartons between the two adjacent fingers, and the space therefore mustbe adapted for the required thickness without friction.

The actuating member 39 has an oval shaped opening 41 adapted to receivean eccentric 42, driven by a shaft 43.

The actuating member has a stop 44 which limits its outward movement andis adapted to bear against a plate 45.

By referring to the Figure 14, the position of the lifter finger 34 isshown just as it has passed into the path of-the cartons in thereceptacle, but above the incoming carton.

Figure 15 shows the eccentric 42 advanced inthe direction of the arrowfor a quarter turn and indicates the vertical movement of the finger 34.Figure 16 shows the receding movement during the quarter of arevolution. between the position shown in Figure 15 and Figure 16; andFigure 17 shows the eccentric in its downward position to bring thelifter linger downward, so that the next quarter of a revolution willagain cause itto assume the position shown in Figure 14.

In order that the movement may be continuous, a stop 46 is provided tobear against the rear of the stop 44011 the actuating ment her 39, whichwill cause the forward lower 'end of the actuating member 39 to bearagainst the guide plate 28.

To bring the lifter linger down into its proper position, the extension40 bears against a pin or stop 47. (See Figure 17).

To separate the lifters one from another. I provide a plate 48 held inposition by the stops 46 and 47 and the shaft 43.

loo

To secure. the proper functioning of the actuating member 39, I providea plate 49 between each pair of fingers (see Figure 13) and a springtension device 50 (see Figure 10) is seated against the outer plate 49and consists of a pin 51 screwed into the side plate 52 of the liftercase and having a sleeve 53 sliding freely on the pin 51and bearingagainsta flexible plate54, pivoted at 55 and bearing against theadjacent plate 49at 56 -by means of a small rivet-head projection.

From the construction just described it is clear that each lifter finger34 during revolutions of shaft 43 has first a vertical movement, then ahorizontal movement out of contact with the cartons and into the liftercase, then a downward movement in the lifter case, and finally ahorizontal movement out into the path of the cartons.

By referring to Figure 9, it will be seen that the shaft 43 is mountedin ball bearings 57 and 58. The shaft 43' has an extension 59 throughone of the ball bearings. This extension is provided with a screw driverslot 60, so that the shaft may be turned into the proper timing positionbefore the driving mechanism is moved into driving mesh.

To drive the shaft 43, I provide a spur gear 61 slidable on theshaft 43(see Figures 7, 9, 11 and 12). This spur gear has a hub 62 provided witha groove 63 and adapted to receive a fork or yoke 64 secured to asliding pin 65, having a knob 66, annular grooves 67 and 68, and a ball69 held in its adjusted positions by a spring 70 for bold ing the yokein either in or out position.

In Figure 9, the spur gear 61 is shown in the mesh position, similar tothe view in Figure 11.

Figure 12 shows the position of the spur gear 61 out of mesh with thedriving train and therefore permits the free adjustment of the shaft 43,so that the position of the eccentrics thereon will correspond to theposition of the opposite lifter case, and the corresponding fingers orlifters of both lifter cases will have the same movement.

Thisadjustment is made upon assembling the machine and also whenever thelifter cases are adjusted or moved into a different position.

Referring to Figures 3, 7 and 9, the shafts 17 and 18 are provided withkeyways 71 each adapted to receive key 72 (see Figure 9) in the gear'73.- The purpose of this is that the gear may have adjustable movementalong the shaft 18. but adapted to rotate with the shaft.

The gear 7 3 meshes with the gear 74, and the gear 7 4 meshes with thegear 75, which in turn meshes with the gear 61. (See Figure 7 The 'ear75 has a fixed osition in the {lifter case, but the gear 7 4 isconnected with the gear 73 and the gear'75 by a link mecha- I the radiusplate 77 and the guide 78.

The guide 78 is secured to a bracket 79 and clamped to the top of thelifter case 23 by a cap screw 80 and a bevel nut 81, which may beadjusted in the bevel slot 82 of the lifter case 23.

j I have found that as the machine is adj usted for different widths,the difference in the radius of the plate 77 and the guide 78 is soslight that it will not prevent the perfect functioning of the deliveryof the cartons on the table 35. e

I claim as my invention: 1. A stackin mechanism velopes, paper. lanks orother articles to be stacked or collected, one at a time, comprising areceptacle having a mov ng conveyor therein for carrying the blanks intothe receptacle, and a series of lifting fingers having a verticalmovement above and in the path of the incoming articles, laterally ofthe conveyor.

2. A stacking mechanism for cartons, envelopes, paper blanks or otherarticles to be stacked or collected one ata time, comprising areceptacle having a moving conveyor for carrying the articles into thereceptacle one underneath the other, anda series of lifting fingershaving a vertical movement above and within the path of the incomingarticles, said lifting fingershaving a yielding movement upon enteringthe path of the article to be lifted.

3. A stacking device for cartons, en:

velopes, paper blanks or other articles for receiving and stacking orcollecting same, one at a time, comprising a receptacle, a movingconveyor in the bottom of said receptacle for feeding the articlestherein, means having a vertical lifting movement directly above andwithin the path of the incoming cartons, adapted to engage the undersideof the previous carton and lift it and. the stack above to permit thefree entry of the following carton into the receptacle.

4. A stacking device for cartons, envelopes, paper blanks or otherarticles for receiving and stacking? or collecting same one at a time,comprising a receptacle hav ing a moving conveyor therein for feedingthe articles into said receptacle, a .stop

for cartons, en-,

articles, one at a time, comprising means for feeding the article intosaid receptacle, means for stopping the article in said receptacleagainst horizontal movement, means for lifting the stack of collectedarticles vertically, means for delivering them into a horizontaldirection, and a table for receiving the collected articles on edge.

7. A receptacle for receiving and stacking cartons, envelopes, paperblanks, or other articles, one at a time, comprising means for feedingthe articles into said receptacle against horizontal movement, meansprovided on the sides of the receptacle for lifting the stack ofcollected articles vertically, said means consisting of a mechanismhaving a-vertical movement above the incoming article, and having ayielding action as to movement into the path of the article and whenmovement of the rising stack is faster than the vertical movement ofsaid lifting means.

8. A device for stacking cartons, envelopes, paper blanks, or otherarticles one at a time, comprising a receptacle, adjustable feedingmeans for feeding the articles into said receptacle, adjustable meansfor varying the angle of said feeding means, adjustable means forstopping the article in said receptacle, "means provided on the sides ofthe receptacle for lifting the stack of collected articles vertically,and means for guiding the top of the vertical stack in a horizontaldirection.

9. A device for stacking cartons, envelopes, paper blanks, or otherarticles to be stacked or collected one at a time, comprising means forfeeding the article into the receptacle, means for checking horizontalmovement .of the article in said receptacle, lifting fingers provided onthe side of the receptacle and having a vertical movement, said liftingfingers being adapted to engage the side of the stack and liftsame in avertical directionysaid fingers having a yielding movement both as tomovement into the path of the incoming article and also as to themovement of the rising stack when the movement of the rising stack isfaster than the movement of the lifting finger drive mechanism.

10. A device for stacking cartons, en-

velopes, paper blanks or other articles to be stacked or collected oneat a time, comprising means for feeding the article into the receptacle,means for stopping the article in said receptacle against horizontalmovement, means adapted to engage the Stack and lift same away from saidfeeding means, and means for guiding the stack of articles at an angleto its initial stacking movement.

11. The combination with a receptacle for cartons, envelopes, paperblanks, or other.

articles, of means adapted to lift the stack of articles away from theincoming article, comprising a series of lifting fingers, a yoke oractuating member on which said fingers are mounted, and an eccentric fordriving said yoke and imparting a yielding in and out motion to saidlifting fingers.

12. The combination with a receptacle for cartons, envelopes, paperblanks, or other articles, of means comprising a series of liftinglingers adapted to lift the stack of collected articles away from thepath of the incoming ttl'tlcle, an eccentrically actuated yoke forimparting a gyrating movement to said fingers, a driving shaft geared tosaid eccentric, and shifting means for rendering said shaft gearingoperative-or inoperative.

13. A slacking device for cartons, envelopes, and the like, comprising areceptacle, means for delivering the articles to be stacked into thelower port-ion of said receptacle, and means operating forward andbackward in thewalls of said receptacle for engaging and liftin the pileof articles, as they accumulate in tie receptacle, to relieve thepressure of the upper articles upon thosev beneath.

14. A stacking device for cartons, envelopes, and the like, comprising areceptacle having means for delivering the cartons into the lowerportion thereof,'and means having a gyrating movement in the walls ofsaid receptacle for engaging and raising the pile of articles therein,and relieving the pressure upon those beneath.

15. A stacking device for cartons, envelopes, and the like, comprising areceptacle having means for delivering the articles to be stacked intothe lower portion thereof, and a series of lifting devices having aforward and backward and vertical movement in said receptacle to engagethe articles therein and raise them to relieve the pressure on thearticles in the bottom of the re- .ceptacle.

16. A stacking device for cartons, envelopes, and the like, comprising areceps tacle, means for delivering the articles to be stacked into thelower portion of said receptacle, means in the opposite walls of thesaid receptacle having a forward and backward and vertical movement forengaging and raising the articles in said receptacle,

and means for rendering said article lifting means effective orineffective. I y

17 A stacking device for cartons, envelopes and the like comprising areceptacle, means for feeding articles into the receptacle, a liftingmechanism including mountings separately movable, each ing a rockablefinger, means for moving the mountings to cause thefingers tosuccessively enter into travel in and be withdrawn from the path of thefed articles, each at varying speeds during its cycle of movementwithinthe path of the fed article, and at slower speed during withdrawal,- thearrangement being such that when a forward finger is being withdrawn afollowing finger moving at a greater speed may, by means of -a cartoninterposed between the fingers,

cause the forward finger to rock and therefore yield in a forwarddirection and thus prevent; marring of the article.

mounting hav- 18. A stacking device for cartons,. envelopes and the likecomprising a receptacle, means for feeding articles into the receptacle,a lifting mechanism including mountings separately movable, eachmounting having a finger rockably mounted, means for moving themountings to cause the fingers to successively enter into travel in andbe withdrawnfrom the path of the fed articles, each at a slower speedduring withdrawal, the arrangement being such that when in forwardfinger is beingwithdrawn, a following finger moving at a greater speedmay, by means of a carton interp'osed between the fingers, cause thespeed of the forward finger thus prevent marring of the article.

In witness whereof, I have hereunto set my hand this 12th day of July,1926.

EDWIN e.-'sTAunn.

to be accelerated, and

